Biohydrogen, biomethane and bioelectricity as crucial components of biorefinery of organic wastes: A review

2014 ◽  
Vol 32 (5) ◽  
pp. 353-365 ◽  
Author(s):  
Héctor M Poggi-Varaldo ◽  
Karla M Munoz-Paez ◽  
Carlos Escamilla-Alvarado ◽  
Paula N Robledo-Narváez ◽  
M Teresa Ponce-Noyola ◽  
...  
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Microbial Fuel Cells ◽  
Organic Waste ◽  
Purple Bacteria ◽  
Dark Fermentation ◽  
Organic Wastes ◽  
Cellulolytic Enzymes ◽  
Advantages And Disadvantages ◽  
Series Systems

Biohydrogen is a sustainable form of energy as it can be produced from organic waste through fermentation processes involving dark fermentation and photofermentation. Very often biohydrogen is included as a part of biorefinery approaches, which reclaim organic wastes that are abundant sources of renewable and low cost substrate that can be efficiently fermented by microorganisms. The aim of this work was to critically assess selected bioenergy alternatives from organic solid waste, such as biohydrogen and bioelectricity, to evaluate their relative advantages and disadvantages in the context of biorefineries, and finally to indicate the trends for future research and development. Biorefining is the sustainable processing of biomass into a spectrum of marketable products, which means: energy, materials, chemicals, food and feed. Dark fermentation of organic wastes could be the beach-head of complete biorefineries that generate biohydrogen as a first step and could significantly influence the future of solid waste management. Series systems show a better efficiency than one-stage process regarding substrate conversion to hydrogen and bioenergy. The dark fermentation also produces fermented by-products (fatty acids and solvents), so there is an opportunity for further combining with other processes that yield more bioenergy. Photoheterotrophic fermentation is one of them: photosynthetic heterotrophs, such as non-sulfur purple bacteria, can thrive on the simple organic substances produced in dark fermentation and light, to give more H2. Effluents from photoheterotrophic fermentation and digestates can be processed in microbial fuel cells for bioelectricity production and methanogenic digestion for methane generation, thus integrating a diverse block of bioenergies. Several digestates from bioenergies could be used for bioproducts generation, such as cellulolytic enzymes and saccharification processes, leading to ethanol fermentation (another bioenergy), thus completing the inverse cascade. Finally, biohydrogen, biomethane and bioelectricity could contribute to significant improvements for solid organic waste management in agricultural regions, as well as in urban areas.

scholarly journals Determinants of Household Solid Waste Generation and Composition in Homs City, Syria

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Mohamad Noufal ◽  
Liu Yuanyuan ◽  
Zena Maalla ◽  
Sylvia Adipah
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Organic Waste ◽  
Solid Waste Management ◽  
Household Head ◽  
Household Waste ◽  
Waste Generation ◽  
Entire Study ◽  
Household Solid Waste ◽  
Starting Point

The absence of accurate information on the state of waste is a challenge to the solid waste management system in Syria. The local authorities commonly estimate the quantity of waste produced and its characterisation, which is the starting point for solid waste management planning. So, this paper aims to evaluate the generation and composition of household solid waste in Homs city, Syria. Also, the study presents factors influencing the waste generation rate and the waste composition. The study was carried out in 300 families from four zones in Homs city, and three sampling stages were conducted during the study duration, which started in July 2017 and ended in February 2019. The outcomes show that an average of 0.68 kg/per/day solid waste generated was calculated for the entire study area in Homs city. Also, the data analysis presents that organic waste constitutes the largest component in the waste mixture (69.1%) followed by plastic (10.6%), inert materials (8.7%), paper (4.6%), textile (2.5%), metal (1.2%), glass (1.1%), wood (0.6%), and hazardous materials (1.6%). The multiple linear regression results showed that the adjusted R2 value was found to be 0.557, 0.839, and 0.709 for the waste generation per capita, the daily household organic waste generation, and the daily household packaging waste generation, respectively. Also, according to Pearson’s coefficient values, a positive correlation was found between household waste generation and monthly income (r = 0.626), household size (r = 0.37), and age of the household head (r = 0.517), whereas a negative correlation was found between household waste generation and the education level of the household head (r = −0.649).

scholarly journals Biogas production for organic waste management: a case study of canteen’s organic waste in Solid Waste Management Technical Support Center, Lalitpur, Nepal

2017 ◽  
Vol 5 ◽  
pp. 41-47 ◽  
Author(s):  
S. Shrestha ◽  
N.P. Chaulagain ◽  
K.R. Shrestha
Keyword(s):  
Carbon Dioxide ◽  
Waste Management ◽  
Solid Waste ◽  
Physicochemical Parameters ◽  
Organic Waste ◽  
Solid Waste Management ◽  
Biogas Production ◽  
Biogas Plant ◽  
P Value ◽  
Organic Waste Management

Management of solid waste is one of the major challenges faced by the municipalities. Solid waste mainly comprises of organic waste. Proper management of organic waste helps minimize solid waste problem. This study was carried out to assess the production of biogas from canteen’s organic waste as a solution for management of organic waste in Solid Waste Management Technical Support Centre, Lalitpur using innovative urban biogas plant with capacity 1,275 liters for 48 days. The physicochemical parameters of canteen’s waste and bio-slurry were analyzed. Similarly, volume of biogas, volume of methane and carbon dioxide in biogas produced were measured and CO2 reduction from biogas plant was identified. The average values of physicochemical parameters of canteen’s waste lied within the optimum range for biogas production. The biogas plant produced 22.03 liters/kg of waste and 120.47 liters/day of biogas. The produced biogas contained 48.89% methane and 39.11% carbon dioxide on average. The biogas plant could reduce 3.20 tones of CO2 equivalent per annum from 262.50 kg of waste fed for 48 days. The values of nitrogen, phosphorus and potassium of bio-slurry indicated it as a better fertilizer. Shapiro-Wilk test showed that the p-value of collected data were greater than 0.05 indicating normal distribution. Linear regression between ambient temperature and biogas production showed that the p-value less than 0.05 indicating significant relationship between them (r2=0.08). The estimated return period of the invested money was 9.5 months in kerosene substitution or 9.7 months in firewood substitution or 9.5 months in LPG substitution. Similarly, the estimated average rate of return was 125.26% in kerosene substitution or 123.72% in firewood substitution or 125.01% in LPG substitution. These results indicated that biogas production using innovative urban biogas plant is better solution for organic waste management. Further extensive and large scale research need to be carried out for the optimization of the biogas plant.

scholarly journals Assessment of Solid Waste Management in Bhaktapur Municipality

2019 ◽  
Vol 7 ◽  
pp. 10-19
Author(s):  
Amit Shankar Ranjit ◽  
Ronish Shakya ◽  
Sushila Gwachha ◽  
Razim Ganesh ◽  
Meera Prajapati ◽  
...  
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Large Scale ◽  
Organic Waste ◽  
Solid Waste Management ◽  
Sample Size Determination ◽  
Household Waste ◽  
Waste Generation ◽  
Special Cases ◽  
Waste Generation Rate

Bhaktapur Municipality has been performing better to keep the city clean. However, scarcity of space for the land filling of the solid waste and proper segregation of waste at the source has been a hurdle for the Municipality. This paper aims to determine solid waste generation rate and to analyze overall situation of solid waste management of Bhaktapur Municipality. However, the data will not represent the seasonal and occasional variations. Additionally, waste from street-sweeping and large-scale institutional and commercial components of the Municipality has not been assessed. Arkin and Colton (1963) was referred for the sample size determination. Sample of 376 households were taken accordingly. Twenty representative samples each for commercial and institutional establishments were selected, and one each for special cases such as hospital, slaughter house and poultry has been assessed. Municipal household waste generation was found to be 0.093kg per capita per day which was chiefly composed of 77% organic, 18% plastic and 3% paper. Organic waste has been a major waste for institutions such as schools whereas at governmental and public offices, paper is the predominantly generated waste. Among commercial establishments, shops and restaurants mostly generate organic waste and that for departmental stores has been paper. Though collection system was found to be satisfactory, treatment and final disposal have been unsustainable. Available treatment facilities have been shut down whereas other infrastructural components have been lacking.

scholarly journals Domestic Organic Waste Composting in Madhyapur Thimi, Bhaktapur

2013 ◽  
Vol 14 (1) ◽  
pp. 129-136
Author(s):  
Jagannath Aryal ◽  
Anand Shova Tamrakar
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Organic Waste ◽  
Management Practices ◽  
Solid Waste Management ◽  
Management Practice ◽  
Crop Productivity ◽  
Maximum Temperature ◽  
Nutrient Analysis ◽  
Physico Chemical

Organic waste composting is an important waste management practice that can reduce the volume of municipal solid waste and increase crop productivity. A study was carried out in Madhyapur Thimi, Bhaktapur in order to develop understanding of different methods of composting for sustainable solid waste management practices. Solid waste was collected randomly from 50 households in the area and segregated manually. The biodegradable waste was composted through pile (aerobic), aerobic bin, anaerobic (pit) and vermicomposting process. The physico-chemical and microbial analysis of composts were carried out in laboratory whereas significance of composts on crop productivity was tested in the study area. The study showed that 81.4% of the waste generated was biodegradable. The physico-chemical and microbial analyses of the compost samples showed pH range of 7.6 to 8.2 and moisture content of 54.5% to 69.5% for different composts. The maximum temperature (62°C) was observed in aerobic (pile) composting. The nutrient analysis (oganic matter, nitrogen, phosphorus, potassium and C: N ratio) of different composts showed that vermicompost was the most among all the composts. The total bacterial and fungal count varied from 3.91 x 104 to 8.05 x 106 cfu/g and 1.30 x 103 to 3.25 x 104 cfu/g respectively. The vermicompost was found rich in microbial population too. The application of vermicompost at 6.25 mt/ha in the study area resulted in increasing in height, diameter and yield of cauliflower by 15.62%, 37.58% and 38.95% respectively over farm yard manure. The height, diameter and yield of cauliflower grown in different composts was found to be significantly different (P<0.05). Nepal Journal of Science and Technology Vol. 14, No. 1 (2013) 129-136 DOI: http://dx.doi.org/10.3126/njst.v14i1.8933

scholarly journals Perencanaan Pengelolaan Sampah Di Pasar Dasan Agung Kota Mataram Dengan Pendekatan Reduce, Reuse Dan Recycle (3R)

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Wahyudin Wahyudin ◽  
Fitriah Fitriah ◽  
Azwaruddin Azwaruddin
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Organic Waste ◽  
Management Plan ◽  
Waste Generation ◽  
Management Planning ◽  
Zero Waste ◽  
Solid Waste Generation ◽  
Inorganic Waste ◽  
Observation Method

<p>Waste management in the Dasan Agung Market in Mataram City still uses conventional patterns. This pattern is not in line with the NTB Province policy that launched the concept of zero waste in 2019-2023. One approach that can support the program is the 3R method of waste management. This study aims to develop a waste management plan using the 3R approach. The method used in this study is the observation method, which is observing the current conditions and measuring the generation and composition of waste. The technique of determining the sample and measurement time and the procedure refers to SNI-19-3964-1995. The results showed that the amount of solid waste generation in Dasan Agung Market was 2.7 m<sup>3</sup> / day and the weight of solid waste was 467 kg / day. Waste composition was obtained by organic waste 52.60% and inorganic waste 47.40%. TPS 3R is planned with an area of 110 m<sup>2</sup>, namely 74 m<sup>2</sup> for composting area and 36 m<sup>2</sup> for sorting and handling inorganic waste, and residual waste. The composting system implemented is using the drum method with a capacity of 100 liters, a total of 307 pieces. Waste Management Planning using the 3R Approach is capable of handling 80% of the waste, and 20% of the residue is disposed of in the landfill.</p>

scholarly journals Kajian Pengelolaan Sampah Berdasarkan Daya Dukung dan Kapasitas Tampung Prasarana Persampahan Kota Depok

2018 ◽  
Vol 2 (2) ◽  
pp. 104 ◽  
Author(s):  
Diana Paramita ◽  
Kukuh Murtilaksono ◽  
Manuwoto Manuwoto
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Carrying Capacity ◽  
Organic Waste ◽  
Solid Waste Management ◽  
Supply And Demand ◽  
City Government ◽  
Processing Unit ◽  
Literature Study ◽  
Unit Unit

Depok City can only manage about 56.22% from total of 1,286 tons of its daily solid waste. The amount increases everyday that it becomes more concerning to apply solid waste management. The objective of this research is to analyze solid waste management based on the carrying capacity and the storage capacity of waste infrastructures in Depok City. Methods of this study were the suitability between supply and demand of domestic solid waste and the waste infrastructures, Integrated Risk Based Approach (IRBA) and literature study. This study shows that Depok City government has a good system in solid waste management but still needs to improve the quantity and capacity of the infrastructures. Garbage banks can reduce 20% of the inorganic waste and the Organic Waste Processing Unit (Unit Pengolahan Sampah Organik/UPS) has low index carrying capacity of 0.26, which can reduce 3.64% of organic waste. The IRBA shows that Cipayung landfill has moderate danger. The numbers of waste infrastructures required at each district in Depok City shall be equipped, so that the amount of waste disposed to Cipayung landfill can be reduced.

scholarly journals SOLID WASTE MANAGEMENT IN THE MUNICIPAL MARKET OF CAUCAIA, CEARÁ

2021 ◽  
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Organic Waste ◽  
Solid Waste Management ◽  
Qualitative And Quantitative ◽  
Final Destination ◽  
City Hall ◽  
The World ◽  
The City ◽  
Selective Collection

Since Brazil is one of the countries which generate more waste in the world and that organic waste represents more than half of this amount, this article aimed to evaluate the life cycle of solid waste in the City Market of Caucaia / CE, carrying out a study with a qualitative and quantitative approach, a descriptive nature and a bibliographic and documentary basis. Using two questionnaires, workes were interviewed, totaling 10 individuals. These individuals were asked about the generation, collection and destination of the waste produced. To understand the management of waste produced in the market, it was decided to interview the city hall technician responsible for the area. Most marketers deposit their waste in the open, do not know the final destination or ways of treating this waste and do not have access to selective collection. More than half of the waste produced has organic origin, however, there are wastes that need specific destination, such as batteries and electronics. Waste management is not very efficient and the city has no strategies. The results obtained show that the management and management of waste from Caucaia / CE still need to undergo some changes, mainly in relation to the destination and treatment of these, especially organic ones.

scholarly journals Peculiarities of biogenic elements migration in case of complex utilization of bioorganic component of municipal solid waste

2021 ◽  
pp. 92-99
Author(s):  
V. Yu. Prykhodko ◽  
T. A. Safranov ◽  
T. P. Shanina
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Organic Waste ◽  
Solid Waste Management ◽  
Raw Materials ◽  
Biogenic Elements ◽  
Municipal Solid Waste Management ◽  
Complex Utilization ◽  
Natural Cycles

Finding solutions to the problem of municipal solid waste management is impossible without involvement in the waste management system of the largest group of wastes – bioorganic waste, which form up to 60% of the municipal solid waste total mass. The aim of the article is to analyze the redistribution of biogenic elements subject to implementation of the Concept of solid municipal waste management by OSENU and subsequent utilization of bioorganic waste flow. Research methods include mass balance and equations of methane generation. The article presents the results of research on the biogenic elements migration in case of complex utilization of bioorganic component of municipal solid waste. The study shows that processing of easy-decomposed organic waste into a gaseous fermentation product and biomineral fertilizer allows full involvement of biogenic elements in natural cycles. The processed solid products present an additional source of organic matter and biogenic elements needed by soil. In the event of humus and nutrients shortage in soil the retrieved-from-waste fertilizer becomes an important secondary resource, containing up to 65% carbon and almost 100% nitrogen, phosphorus and potassium. The rest of carbon is released with biogas and is eventually involved in natural cycles. Burial of such waste results in localization of biogenic elements in a landfill's body and gradual release of carbon with the products of destruction (27% over 50 years). All this data indicate the need for efficient use of such waste resource potential which is possible in case of easy-decomposed organic waste separation at the beginning of the municipal solid waste life cycle. Combustion releases only carbon in the form of carbon dioxide, the rest remains in ash. However, complex utilization of easy-decomposed organic waste ensures complete return of biogenic elements to the environment. Reuse of secondary raw materials in the form of paper and textile waste minimizes involvement in economic turnover of carbon from natural sources.

scholarly journals Harmony of urban microcommunal-based domestic waste management

2018 ◽  
Vol 74 ◽  
pp. 06001
Author(s):  
Bramanto Geritno ◽  
Tresna P Soemardi
Keyword(s):  
Quantitative Analysis ◽  
Waste Management ◽  
Solid Waste ◽  
Organic Waste ◽  
Solid Waste Management ◽  
Cost Benefit ◽  
Domestic Waste ◽  
Impact Reduction ◽  
Illegal Disposal ◽  
Domestic Solid Waste

This paper examines utilizing compost from household organic waste on green space in a scale of micro-community, Rukun Tetangga. Harmony of urban microcommunal-based domestic solid waste management is designed through its social psycology variables are encouraging degree of cultural harmony in the microcommunal of domestic waste management, degree of physical harmony in the microcommunal of domestic waste management, degree of phsycological harmony in the microcommunal of domestic waste management. Since its implementation in urban, Sub-District Suka Asih, Tangerang City, Banten will impact reduction of illegal disposal of domestic waste into canal, reduction of CO2(eq) emission, and reduction of landfill area. The research uses quantitative analysis by questionnaire with Likert scale method to elaborate individual attitude and social system. Uses quantitative analysis by using CBA to measure total cost-benefit impacts arising, and LCA to measure of CO2(eq) emission as pollutant impacts, and arithmetic models for modeling the impacts of land use. These findings contribute to the literature by emphasizing how individual attitudes, environmental problems, and settlements play an important role in the success of a harmonious solid waste management system.

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